Ships by Ortho Arch within 3 to 7 business days
Size .010 x .030
Closed Coil, or Extension, springs are used to close spaces between teeth or, more simply, to move points closer to one another. The coils are extended when loaded and provide retraction forces to close spaces. Extension springs may also be used to maintain spaces for future eruptions or prosthetics.
• Springs are made of premium Nickel Titanium wire.
• Provide continuous retraction forces throughout activation.
• Securely attached, precision designed Stainless Steel Key-end eyelets for easy attachment.
• Virtually no permanent deformation with proper use.
• Recommended activation length is two times original spring length.
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